Radar tracking beam angle measurement method

Abstract

The invention relates to a radar tracking beam angle measurement method, and belongs to the field of radar design. The objective of the invention is to overcome the problems of large S-curve data capacity and complex angle measurement process of an existing monopulse sum-difference beam amplitude comparison angle measurement method under the conditions of large airspace, any angle and multiple beams at the same time. The method comprises the steps of constructing a universal angle measurement curve (K curve) subjected to spatial domain transformation, the abscissa of the K curve is p, the ordinate of the K curve is the difference sum ratio (volt _ ratio), p = (sin (theta)-sin (theta B)) / lambda, and storing K curve data into a radar computer; comparing the difference sum ratio (volt _ ratio) of the target echo actually measured by the radar with the K curve data, and looking up a table to obtain a corresponding p value; and calculating a target angle value according to theta = arcsin (p* lambda + sin (theta B)). The K curve obtained through spatial domain transformation is not affected by factors such as beam pointing and frequency, the data storage space is small, the table look-up process is simple, and single-pulse sum-difference amplitude comparison angle measurement under the conditions of large spatial domain, any angle and multiple beams at the same time can be simply and conveniently achieved.

Description

technical field [0001] The invention belongs to the field of radar design, in particular to a radar tracking beam angle measurement method. Background technique [0002] As an important sensor for battlefield perception in modern warfare, radar is the most basic and important function to track and detect the spatial position of the target, and the measurement of the target angle is an important part of it. With the development of phased array radar technology, the monopulse angle measurement method is widely used in radar angle measurement. This method includes ratio amplitude monopulse angle measurement and phase ratio monopulse angle measurement. most common. [0003] The monopulse and difference beam ratio amplitude angle measurement method forms a sum beam, an azimuth angle difference beam and an elevation angle difference beam at each wave position, and the horizontal axis can be obtained by the amplitude ratio of the difference beam pattern and the sum beam pattern as...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved in the present invention is how to provide a radar tracking beam angle measurement method to overcome the S-curve data of the existing single pulse and difference beam ratio amplitude angle measurement method in the case of large airspace, arbitrary angles, and multiple beams at the same time. Problems with large capacity and complicated angle measurement process

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